I基于的数字图像处理系统设计.doc

毕业设计（论文） 毕业论文题目：基于matlab的图像形状与分类 摘 要 数字图像处理是一门新兴技术，随着计算机硬件的发展，数字图像的实时处理已经成为可能，由于数字图像处理的各种算法的出现，使得其处理速度越来越快，能更好的为人们服务。数字图像处理是一种通过计算机采用一定的算法对图形图像进行处理的技术。数字图像处理技术已经在各个领域上都有了比较广泛的应用。图像处理的信息量很大，对处理速度的要求也比较高。MATLAB强大的运算和图形展示功能，使图像处理变得更加的简单和直观。本文介绍了MATLAB 语言的特点，基于MATLAB的数字图像处理环境，介绍了如何利用MATLAB及其图像处理工具箱进行数字图像形状的边缘提取和识别分类。论文主要论述了利用MATLAB实现对图像中的三角形，正方形，圆，椭圆，菱形的边缘提取和自动识别分类。 关键词：MATLAB；数字图像处理图像ABSTRACT Digital image processing is an emerging technology, with the development of computer hardware, real-time digital image processing has become possible due to digital image processing algorithms to appear, making it faster and faster processing speed, better for People services. Digital image processing is used by some algorithms computer graphics image processing technology. Digital image processing technology has been in various areas have a relatively wide range of applications. Image processing large amount of information on the processing speed requirement is relatively high. MATLAB powerful computing and graphics display capabilities, so that image processing becomes more simple and intuitive. This paper introduces characteristics of MATLAB language and this digital image processing environment based on MATLAB, describes how to use the MATLAB Image Processing Toolbox for its digital image processing, The edge of the digital image shape extraction and recognition of classification. This paper mainly discusses the use of MATLAB to achieve the edge of the image triangle，square，circle， oval diamond extraction and classification of automatic identification. Key Words：MATLAB；Digital Image Processing; Image shape; Image Classification  1 引言 1 1.1课题研究目的及意义 1 1.2国内外研究现状 1 1.3本课题研究工作与结构安排 2 2 数字图像形状及预处理 3 2.1概述 3 2.2 数字图像的预处理 4 2.2.1 4 2.2.2采样 6 2.2.3量化 7 2.2.4 采样、量化和图像细节的关系 7 2.3几种典型的形状特征描述方法 8 3形状特征及提取分类 9 3.1 矩形度 10 3.2 圆形度 10 3.3 矩 11 3.4 不变矩 11 3.5基于不变矩的形状特征提取 12 3.5.1 特征提取步骤 12 3.5.2 边缘提取算子的确定 12 3.5.3 边缘提取常用算子 12 3.5.4 Canny算子 13 3.6 边缘提取实验结果及分析 1